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Merge pull request #2581 from nenkoru/main
Add controller-isleader xweb component to respond with 200 if the controller in question is a raft leader
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,159 @@ | ||
| /* | ||
| Copyright NetFoundry Inc. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| https://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package webapis | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| gosundheit "github.com/AppsFlyer/go-sundheit" | ||
| "github.com/openziti/xweb/v2" | ||
| "github.com/openziti/ziti/controller/env" | ||
| "github.com/sirupsen/logrus" | ||
| "net/http" | ||
| "strings" | ||
| "time" | ||
| ) | ||
|
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| var _ xweb.ApiHandlerFactory = &ControllerHealthCheckApiFactory{} | ||
|
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| type ControllerHealthCheckApiFactory struct { | ||
| appEnv *env.AppEnv | ||
| healthChecker gosundheit.Health | ||
| } | ||
|
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| func (factory ControllerHealthCheckApiFactory) Validate(config *xweb.InstanceConfig) error { | ||
| return nil | ||
| } | ||
|
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| func NewControllerHealthCheckApiFactory(appEnv *env.AppEnv, healthChecker gosundheit.Health) *ControllerHealthCheckApiFactory { | ||
| return &ControllerHealthCheckApiFactory{ | ||
| appEnv: appEnv, | ||
| healthChecker: healthChecker, | ||
| } | ||
| } | ||
|
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| func (factory ControllerHealthCheckApiFactory) Binding() string { | ||
| return ControllerHealthCheckApiBinding | ||
| } | ||
|
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| func (factory ControllerHealthCheckApiFactory) New(_ *xweb.ServerConfig, options map[interface{}]interface{}) (xweb.ApiHandler, error) { | ||
| healthCheckApiHandler, err := NewControllerHealthCheckApiHandler(factory.healthChecker, factory.appEnv, options) | ||
|
|
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| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| return healthCheckApiHandler, nil | ||
|
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| } | ||
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| func NewControllerHealthCheckApiHandler(healthChecker gosundheit.Health, appEnv *env.AppEnv, options map[interface{}]interface{}) (*ControllerHealthCheckApiHandler, error) { | ||
| healthCheckApi := &ControllerHealthCheckApiHandler{ | ||
| healthChecker: healthChecker, | ||
| appEnv: appEnv, | ||
| options: options, | ||
| } | ||
|
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| return healthCheckApi, nil | ||
|
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| } | ||
|
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| type ControllerHealthCheckApiHandler struct { | ||
| handler http.Handler | ||
| options map[interface{}]interface{} | ||
| appEnv *env.AppEnv | ||
| healthChecker gosundheit.Health | ||
| } | ||
|
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| func (self ControllerHealthCheckApiHandler) Binding() string { | ||
| return ControllerHealthCheckApiBinding | ||
| } | ||
|
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| func (self ControllerHealthCheckApiHandler) Options() map[interface{}]interface{} { | ||
| return self.options | ||
| } | ||
|
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| func (self ControllerHealthCheckApiHandler) RootPath() string { | ||
| return "/health-checks" | ||
| } | ||
|
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| func (self ControllerHealthCheckApiHandler) IsHandler(r *http.Request) bool { | ||
| return strings.HasPrefix(r.URL.Path, self.RootPath()) | ||
| } | ||
|
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| func (self *ControllerHealthCheckApiHandler) ServeHTTP(w http.ResponseWriter, request *http.Request) { | ||
| output := map[string]interface{}{} | ||
| output["meta"] = map[string]interface{}{} | ||
|
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| data := map[string]interface{}{} | ||
| output["data"] = data | ||
|
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| w.Header().Set("Content-Type", "application/json") | ||
| encoder := json.NewEncoder(w) | ||
| encoder.SetIndent("", " ") | ||
|
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| results, healthy := self.healthChecker.Results() | ||
| data["healthy"] = healthy | ||
| var checks []map[string]interface{} | ||
| shortFormat := request.URL.Query().Get("type") == "short" | ||
|
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| for id, result := range results { | ||
| check := map[string]interface{}{} | ||
| checks = append(checks, check) | ||
| check["id"] = id | ||
| check["healthy"] = result.IsHealthy() | ||
| if !shortFormat { | ||
| check["lastCheckDuration"] = fmt.Sprintf("%v", result.Duration) | ||
| check["lastCheckTime"] = result.Timestamp.UTC().Format(time.RFC3339) | ||
|
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| if result.Error != nil { | ||
| check["err"] = result.Error | ||
| check["consecutiveFailures"] = result.ContiguousFailures | ||
| } | ||
|
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| if result.TimeOfFirstFailure != nil { | ||
| check["failingSince"] = result.TimeOfFirstFailure.UTC().Format(time.RFC3339) | ||
| } | ||
| if result.Details != "didn't run yet" { | ||
| check["details"] = result.Details | ||
| } | ||
| } | ||
| } | ||
| data["checks"] = checks | ||
|
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| if strings.HasSuffix(request.URL.Path, "/controller/raft") { | ||
| isRaftEnabled := self.appEnv.GetHostController().IsRaftEnabled() | ||
| isLeader := self.appEnv.GetHostController().IsRaftLeader() | ||
|
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| if !isLeader && isRaftEnabled { | ||
| w.WriteHeader(429) | ||
| } | ||
|
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| raftData := map[string]interface{}{} | ||
| raftData["isRaftEnabled"] = isRaftEnabled | ||
| raftData["isLeader"] = isLeader | ||
| output["raft"] = raftData | ||
| } | ||
|
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| if err := encoder.Encode(output); err != nil { | ||
| logrus.WithError(err).Error("failure encoding health check results") | ||
| } | ||
| } | ||
|
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| func (self ControllerHealthCheckApiHandler) IsDefault() bool { | ||
| return false | ||
| } |
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